Abu Hatim ibn Hibban al-Busti: He used to practice Tadlis and was one of the most eloquent, most worshipping, and most knowledgeable people of Basra
Abu Abd Allah al-Hakim al-Naysaburi: An Imam, حافظ (preserver of hadith), trustworthy. He said in 'Su'alat al-Sijzi': He did not hear from Tamim al-Dari, nor did he see him
Abu Qatada al-Ansari: Follow this Sheikh, for I have not seen anyone whose opinion is more similar to that of Umar than him
Ahmad ibn Salih al-Jili: Trustworthy, a righteous man, possessor of Sunnah
Anas ibn Malik ibn al-Nadr: Ask him, for he has memorized what we have forgotten
Ibn Hajar al-'Asqalani: Trustworthy, Faqih (scholar of Islamic jurisprudence), excellent, famous, and he used to narrate many narrations and practice Tadlis
al-Daraqutni: His mursal narrations have weakness in them
al-Dhahabi: The Imam was of great importance, highly regarded, a leader in knowledge and deeds, he was one of the Imams of Sunnah and guidance, and once: al-Hasan used to practice Tadlis
Sibṭ ibn al-'Ajami: One of those famous for practicing Tadlis
Sulayman ibn Tarkhan al-Taymi: Al-Hasan, the Sheikh of the people of Basra
Abd Allah ibn 'Aun al-Basri: He did not meet Jabir, nor Abu Hurayrah, nor Abu Sa'id, nor Ibn Abbas, he met Ibn Umar
Ali ibn al-Madini: The mursal narrations of al-Hasan which the trustworthy narrators narrated from him are Sahih (authentic)
Amr ibn Murrah al-Muradi: I envy the people of Basra for having al-Hasan and Muhammad ibn Sirin
Muhammad ibn Sa'd, the scribe of al-Waqidi: Al-Hasan was a comprehensive, knowledgeable, high-ranking, Faqih (scholar of Islamic jurisprudence), trustworthy, reliable, worshipping, ascetic, possessing much knowledge, and eloquent
The authors of Tahrir Taqrib al-Tahdhib: His Tadlis is detrimental if it is from a Sahabi (companion of the Prophet), as for from a Tabi'i (successor to the companions), then it is not
Yunus ibn 'Ubayd al-'Abdi: I have not seen a man more truthful in what he says than him